Seeing this in chrome/firefox/macos. The situation continues into the game. Maybe some sort of issue with high dpi displays?
I also experienced a "freeze up." The game seemingly stopped responding to inputs, but the music still played. This is the only notable thing in the javascript console:
Uncaught TypeError: Failed to execute 'decode' on 'TextDecoder': The encoded data was not valid. at getStringFromWasm0 (bevy_game.js:48:30) at imports.wbg.__wbg_mark_abc7631bdced64f0 (bevy_game.js:371:26) at tracing_wasm::mark::h1e73bde4d6ddd511 (bevy_game_bg.wasm:0xc46491)